Nut-lock.



N0- 830,5 9 5. PATENTED SEITLII, 1906. 'G. W. JONES.

NUT LOCK.

APPLICATION FILED June, 1906.

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UNITED STATES PATENT OFFIOE.

GEORGE WALLACE JONES, OF GATE CITY, ALABAMA.

NUT-LOCK- Specification of Letters Patent.

Patented Sept. 11, 1906.

Application filed January 18, 1906. Serial No. 296,624.

object to provide an improved and simple device for lockin the nut on a bolt.

It is particu arly useful in connection with bolts used to fasten railway fish-plates and is so illustrated in the accompanyin drawings.

In the drawings, Figure 1 is a the invention applied to rails an fish-plates. Fig. 2 is a side elevation thereof. Fig. 3 is'a vertical cross-section. Fig. 4 is a perspective view of the locking device detached. Fig. 5 is a perspective view of the nut to which said locking device is a plied. Fig. 6 is a side elevation of a modifie form in which the locking-plate is applied to a plurality of nuts.

Referring specifically to the drawings, 6 indicates the meeting ends of two rails, and 7 the fish-plates thereon. These are fastened together by bolts 8 having nuts 9. Each nut has in opposite sides thereof ad'acent its lower edge a notch or recess 10. T e locking device for the nut consists of a piece of soft spring-steel or flexible iron (indicated at 11) preferably rectangular in shape or having at least one straight edge. This plate has a central recess 12 of proper size and shape to fit over the nut and on opposite sides of the recess has spring-tongues 13 struck up from the plate. These tongues are of proper size and shape to fit in the notches 10, which are of less width than the side of the nut,.so that the edges of the notches come against the edges of the tongues and so oppose the turn of the nut to a greater extent than if the tongue merely pressed against the side of the nut.

In use the nut is tightened against the fishplate until it sets square with the rail that an view of is, with its lower side parallel to the lower edge of the fish-plate or the base of the rail and with the notches 10 at the sides. The plate 11 is then applied and put on over the nut, the tongues 13 yieldin to allow this action. When the plate reac es thefish-plate, the tongues 13 spring into the notches, and

therefore revent the nuts from turning unless the p ate is also turned; but the late is of such size that its lower edge fits against the base or flange of the fish-plate, and so cannot turn. The nut is thus locked a ainst rotation and cannot be unscrewed wit out prying the tongues out of the notches and removing the plate. Y

In Fig. .6 a modified form is shown in which the plate is made long enough to cover a plurality of bolts, a hole being provided for each bolt and tongues at each hole to engage the nuts inthe same manner as cated.

Although illustrated in connection with a rail-joint, the invention is not confined thereto, but may, for example, be used on frogs, crossings, bridge-bolts, and the like.

In a nut-lock, the combination with a nut having a notch in the side thereof at its inner ed e, said notch being of less width than the sid e of the nut, producing opposite shoulders above in at the sides, of a plate having an opening the same size as the nut, in which the nut fits with its sides against the edge of the opening, to prevent turning of the nut, and a springtongue at the edge of said opening engaging thenotch,the tongue being of less width than the width of the opening and engaging the shoulders of the notch at its side ed es.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE WALLACE JONES. Witnesses:

JAs. DANIEL MoCooL, 'FREDnrcK BRUOHER. 

